| 根际微生物多样性与棉花品种对黄萎病抗性的关系研究 II.不同抗性品种根际真菌区系分析及其对棉花黄萎病菌的抑制作用 |
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| 引用本文： | 李洪连,袁红霞,王烨,黄俊丽,柴俊霞,王守正.根际微生物多样性与棉花品种对黄萎病抗性的关系研究 II.不同抗性品种根际真菌区系分析及其对棉花黄萎病菌的抑制作用[J].植物病理学报,1999(3). |
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| 作者姓名： | 李洪连 袁红霞 王烨 黄俊丽 柴俊霞 王守正 |
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| 作者单位： | 河南农业大学植保系!郑州450002 |
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| 基金项目： | 河南省杰出青年基金，中国科学院封丘农业生态试验站开放基金 |
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| 摘 要： | 对棉花抗黄萎病品种（春矮早和８６－ ６）和感病品种（中棉１７和豫棉１２）的根际真菌区系进行了分析。结果表明每个品种都有自己独特的根际微生物区系，抗病品种根际微生物种数多于感病品种，区系组成更为复杂。抗病品种根际真菌优势种主要是漆斑菌 （Ｍｙｒｏｔｈｅｃｉｕｍ ）、粘帚霉（Ｇｌｉｏｃｌａｄｉｕｍ ）、曲霉（Ａｓｐｅｒｇｉｌｌｕｓ）和青霉（Ｐｅｎｉｃｉｌｌｉｕｍ ）等，感病品种则多为头孢霉（Ｃｅｐ ｈａｌｏｓｐｏｒｉｕｍ ）、镰刀菌（Ｆｕｓａｒｉｕｍ ）、矛束孢（Ｄｏｒａｔｏｍｙｃｅｓ）、粘帚霉（Ｇｌｉｏｃｌａｄｉｕｍ ）和漆斑菌（Ｍｙｒｏｔｈｅｃｉｕｍ ）等。采用平板对峙培养法测定了不同抗性棉花品种根际真菌区系各成员对棉花黄萎病菌的抑制作用，发现抗病品种根际真菌区系中对黄萎病菌具有抑制作用的真菌种数和比率都高于感病品种，而且抗病品种根际真菌的优势种对棉花黄萎病菌的抑制作用较强。这种差异在苗期和现蕾期更为明显，花铃期则显著减小。研究结果表明棉花品种对棉花黄萎病的抗性与根际真菌区系组成及其对黄萎病菌的抑制能力有一定关系。
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| 关 键 词： | 根际真菌 区系 优势种 抑菌作用 黄萎病菌 棉花品种 抗病性 |
STUDIES ON THE RELATIONSHIP BETWEEN DIVERSITY OF MICROBES IN RHIZOSPHERE AND RESISTANCE OF COTTON CULTIVARS TO Verticillium dahliae II.THE FUNGI FLORA IN THE RHIZOSPHERE OF DIFFERENT COTTON CULTIVARS AND ITS INHIBITION TO V. dahliae |
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| Li Honglian,Yuan Hongxia,Wang Ye,Huang Junli,Cai Junxia,Wang,Shouzheng.STUDIES ON THE RELATIONSHIP BETWEEN DIVERSITY OF MICROBES IN RHIZOSPHERE AND RESISTANCE OF COTTON CULTIVARS TO Verticillium dahliae II.THE FUNGI FLORA IN THE RHIZOSPHERE OF DIFFERENT COTTON CULTIVARS AND ITS INHIBITION TO V. dahliae[J].Acta Phytopathologica Sinica,1999(3). |
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| Authors: | Li Honglian Yuan Hongxia Wang Ye Huang Junli Cai Junxia Wang Shouzheng |
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| Abstract: | The fungi flora in the rhizosphere of cotton cultivars resistant and susceptible to Verticillium dahliae was analyzed in different living stages. The results showed that the fungi species, species number and dominates for each cultivar were different. There are more fungi species in the rhizosphere of resistant cotton cultivars than susceptible ones. The fungi dominates in the rhizosphere of resistant cotton cultivars are Myrothecium, Gliocladium, Aspergillus, Penicillium and so on, but Cephalosporium, Fusarium, Doratomyces, Gliocladium, Myrothecium are the fungi dominates in the rhizosphere of susceptible ones. The inhibition of fungi in the rhizosphere of different cotton cultivars was measured in vitro , the number and rate of fungi inhibiting V. dahliae in resistant cultivars are more than in susceptible ones. The inhibition of fungi dominates in rhizosphere of resistant cotton cultivars to V. dahliae is also stronger than in that of susceptible ones. The difference between resistant and susceptible cotton cultivars in fungi flora and inhibition to V. dahliae are much bigger in seedling stage and squaring stage than boll stage. These results indicated that cotton resistance to V. dahliae is closely related to microbes in rhizosphere and its inhibition. |
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| Keywords: | fungi in rhizosphere flora dominates inhibition Verticillium dahliae cotton cultivars resistance |
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